Reflector holder



Dec. 23, 1941. J. A. McKAY REFLECTOR HOLDER Filed Sept 12, 1939 Patented Dec. 23, 1941 UNITED PATENT orgies HOLDER John A McKay, Coshocton, Ohio embassy-wags??? 12, 1: 3 sea- .2 459 8 Claims. (Q1. Mil-#128) Thi n e t eg elates t m em-.. an o se th s ved -9159* e sil if r e I dete t a? th er sen a e ieflee er 39 513?- am /ab y rage-r ar; tsi lame a a lamp efi sete is d e tent ei aemeet ambit 8 same ar aven e? as t be rea t and an sl rem. r d re t sie r e ee m ft e 'n purposes. other bje ts 9f th re en in n enw b come moreappa-rerrt from the following description, in which I illustrate a preferred embodiment of my invention. The essential features of the invention will be summarized in the claims.

In the drawing, Fig. 1 is a side elevation of my improved reflector holder; Fig. 2 is an axially extending vertical section, as indicated by the lines 22 on Fig. 1; Fig. 3 is a bottom plan view of the holder itself, the lamp and reflector having been removed therefrom; Fig. 4 is a vertical section through the holder, the plane of the section being indicated by the lines 4-4 on Figs. 2 and 3; Fig. 5 is a fragmentary sectional detail, as indicated by the lines 55 on Fig. 3.

Referring again to the drawing, my improved reflector holder is generally indicated at H], and comprises a hollow, open-ended body, as, for instance, a casting, in which is mounted a lamp socket H, adapted and arranged to receive an electric lamp l2 in the usual manner. The socket ll may be of the usual porcelain or composition type and is secured to the top wall M of the body by bolts or screws I5 and is partially enclosed by the downwardly extending cylindrical side wall I! of the body H).

The holder [0 is arranged to be mounted on a hollow bushing or conduit [6, which, as shown, is connected to a threaded opening l8 extending through the top wall M of the body, and through which electric conductor wires l9 pass to the lamp socket H.

The reflector 20 is provided adjacent its upper end with a reduced neck 2| having an annular groove formation 22 by means of which the reflector is secured in position on the holder.

In the form of my invention illustrated in the accompanying drawing, the cylindrical side wall of the holder body 10 :is provided, adjacent its lewe i w th an wa d ex e u a r b ioem qn Th rib fo e a is e ably complementary to the grooveof the reflector cast e d r me itien t I Insertion of the reflector neck 21 in the holder ID is made possible by a movable section 2-5 of the side wall I! of the holder body. As illustrated in the drawing, that portion of the side wall l! of he od h v n th i m tio 4 is u away for about one-third of the circumference of the h lcier and is replaced by a movable section 25 11%. in a r ma i Zflhi mm a continuation r the m; 24 r the body. The u per p rtion of this movable section 25 seats in a rece s i te me n h bo a d i v ii d with'an pwardly extending lug '29, which engages an external surface of the bod'y, as shown in Fig. 2, and a pair of inwardly and then'upwardly extending ears 28, which engage the internal surface of the body, as illustrated in Fig. 5. The section 25 of the holder is movably secured to the holder by a screw 29, which passes through the lug 21 on the movable member and is in threading engagement with the side Wall of the holder. Thus, when this set screw is turned inward, where its shoulder 30 engages the bottom of its protecting recess 3|, the member 25 will be securely retained against movement on the holder, as shown by full lines in Fig. 2. The screw 29 is provided with a cotter pin 32, which prevents complete removal thereof, and is preferably provided with a recess 33 adapted to receive an especially shaped tool, so as to make removal of the reflector by unauthorized persons difficult.

When it is desired to remove the reflector from the holder, the screw 29 is loosened, and the reflector swung downwardly as indicated by the arrow shown in Fig. 2, thus camming the movable section 25 of the holder to the dotted line position, whereupon the reflector may be readily withdrawn from the holder. The movable section 25 of the holder is normally retained in the position shown in full lines in Fig. 2 by a leaf spring formation 35, which is secured to the holder as by a rivet 35. The ends of this spring engage the upper ends of the ears 28 of the movable member, as shown in Figs. 3, 4 and 5.

The camming of the movable section 25 outwardly against the action of the spring 35 is facilitated by the curvilinear or semi-cylindrical contour of the retaining rib 24--a of the movable section 25. The contour of this rib is such that when engaged by the top of the reflector 29, positioned for insertion in the holder, as indicated by the dotted lines in Fig. 2, movement of the reflector in a direction opposite to that indicated by the arrow in Fig. 2, will cam the movable section 25 outwardly against the action of the spring 35 to permit entrance of the: neck of the holder in the reflector, after which the spring will retain the reflector in position, when, if desired, the movable section 25 and hence the reflector, may be locked in position by the screw 29.

From the foregoing description it will be seen that I have provided a reflector holder from which the reflector may be readily removed, and

which holder may be economically manufactured l and readily assembled.

I claim: 1. A reflector holder comprising a hollow openended body, having a downwardly extending annular skirt provided with a recess, said skirt also having an internal annularly extending rib for having a downwardly extending annular skirt provided with a recess, said skirt also having an internal annularly extending rib for engaging an annular recess formed in a reflector, one section of said rib being movable and having an upwardly extending lug engaging an external surface of said skirt and seating in the recess therein a screw passing freely through said lug and threaded in said skirt to interconnect said movable section with said skirt, said screw when tight preventing movement of said movable section and when loose allowing it to swing outwardly at the lower edge to permit the removal of the reflector, and a spring mounted entirely within the confines of said body to return said movable section to a reflector engaging position.

3. A reflector holder comprising a hollow member of approximate bell shape open at its lower end and provided at its top with means for attachment to a fixed support, said hollow member having adjacent the lower end a substantially cylindrical wall with an omitted arcuate region leading from the lower end, a movable section having an arcuate portion adapted to occupy the omitted space in the hollow member and having an exterior face substantially registering arcuate- 1y with the exterior of the member, the member itself and the removable section being formed on their inner faces with arcuate beads registering longitudinally," said movable section in an intermediate region being provided with an upwardly extending lip normally occupying a downwardly facing recess in the wall of the hollow member, said movable section having an inwardly extending portion across the lower edge of the hollow member at the omitted region, said movable section having an upwardly projecting portion which lies along the inner surface of the hollow member, a spring within the hollow member attached thereto and bearing on the upwardly extending portion of the movable member, and a screw passing through the upwardly extending lip of the movable member and threaded into the hollow member, whereby the movable member may be held rigidly to the hollow member.

. JOHN A. MCKAY. 

